Recently we found Paul Madary's blog post about digital signatures in a Univeral Application (UWP) with iText 7, and we wanted to share it. Paul gracefully agreed to let us do that, and as a bonus we upgraded the code to be usable out-of-the-box with iText 7.1.3. The only change needed is the method SignDocumentSignature.

A big thank you to our Q3 top contributors!

There are so many people that contribute information to us in order to help improve our code, products and projects. We want to make sure that our top contributors are being recognized for the help they give and that they know how much we appreciate them.

It seems that it misses the Adobe Font Metrics (.afm) files. This message tells you that the file Helvetica.afm can't be found. This file contains the metrics of every glyph in the font Helvetica (regular). Without those metrics, you can't create a proper PDF. This explains what happens. Your question doesn't contain sufficient information to explain why it happens. All of this shouldn't be a problem when using the correct jar with a JDK that knows how to read resources from a jar. The fact that you write "What might cause ... to start returning the following" indicates that it has worked for you before. Think of what you have changed between the last time it worked and the first time it stopped working (e.g. changing the OS, changing the JVM,...). That will probably be the culprit.

Click this link if you want to see how to answer this question in iText 5.

How to display indian rupee symbol?

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